This will automatically be used when you use Button in your layouts
and the top-level activity / dialog is provided by
appcompat.
You should only need to manually use this class when writing custom views.

setBackgroundResource

setSupportAllCaps

Sets the properties of this field to transform input to ALL CAPS
display. This may use a "small caps" formatting if available.
This setting will be ignored if this field is editable or selectable.
This call replaces the current transformation method. Disabling this
will not necessarily restore the previous behavior from before this
was enabled.